Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/89e7bf74138b
Author: Francisco Jordano <arcturus@ardeenelinfierno.com>
Desc: Merge pull request #19484 from arcturus/bug-1013940

Bug 1013940 - [Contacts][Data Refactor] Add examples applications to play with extra contact datastores r=jmcf

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https://hg.mozilla.org/integration/gaia-central/rev/d540f8e550b5
Author: Francisco Jordano <fjordano@mozilla.com>
Desc: Bug 1013940 - [Contacts][Data Refactor] Add examples applications to play with extra contact datastores

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https://hg.mozilla.org/integration/gaia-central/rev/04a4dcacedff
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #19192 from airpingu/bug-1009408-IAC-install-origin

Bug 1009408 - IAC shouldn't check the install origin for certified apps (part 1, remove the install origin check for the certified app). r=ferjm

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https://hg.mozilla.org/integration/gaia-central/rev/4d7e6982873f
Author: Gene Lian <airpingu@gmail.com>
Desc: Bug 1009408 - IAC shouldn't check the install origin for certified apps (part 1, remove the install origin check for the certified app). r=ferjm
Bumping manifests a=b2g-bump